There are rumours that Elvis recorded Feelings at Graceland on the night of February 7/8 1976, although no tape has surfaced. Not even a line or two.
Some of the musicians have gone on record saying that he did record it.
It was a rehearsal only though, and evidence suggests that it was recorded onto the same (now erased) tape from where America The Beautiful came from on the Jungle Room Sessions FTD. Only the very last line of ATB was recovered from that tape: the full studio version of that was lost forever.
Personally, I could live without hearing Feelings ... that songs sucks.